This
book is partly about the physicality of thought, emotions,
etc. in our bodies. Brain does mind, and mind is just
electrics and hormones, electro-chemical signaling. Thinking
can be changed, caffeine /substances /medication stunt
our brain's built-in wakefulness /calming /euphoric abilities
leading to the need for more - addiction. I'm only half-way
through, and big changes have occurred in me. A doctor
and a neurologist wrote it for the layman.